Answer:
The building is approximately 39 m high.
Step-by-step explanation:
As seen in the diagram attached, a triangle can be formed between the boy, the top of the building, and the lateral distance between the boy and the building.
We can now use trigonometric laws to find the distance AC between the boy's head and the top of the building.
tan 40 = AC/37.5
AC = 37.5 X tan 40 = 31.46m
We have just obtained the distance from the boy's head to the building top.
To get the true height of the building, we have to add the height of the platform the boy is standing on to the value just found.
7.5m + 31.46m = 39m
Answer:
E
b-a-d-g-a-e
Step-by-step explanation:
p(x)=
- 
+ 800x - 1599
given x = a is a zero of a polynomial p (x) then
(x - a) is a factor of the polynomial
complex zeros occur in conjugate pairs
5 + 4i is a zero hence 5 - 4i is a zero
factors are (x - 3),(x + 13),(x - (5 + 4i) and (x - (5 - 4i)
The polynomial is the product of it's factors
p(x) = (x - 3)(x + 13)(x - (5 + 4i)(x - (5 - 4i)
expanding the factors
p(x) = (
+ 10x - 39)( - 10x + 41)
= - + 800x - 1599
2. the scale factor is x= 4.5 cm
this is because when u see how much it dilated from 4cm to 2cm it divided from 2, so if u did the same for the other number. Which is 9, it’s 9/2 which equals 4.5
